US2679465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
-nt office
Assignee: —
•
Filing: —
•
Granted: 1954-05-25
•
Expires: 1971-05-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:38
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/43; C11D3/16; C11D3/26; C11D3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A METHOD FOR REMOVING POLYMERS OF FURTURAL FROM METALLIC SURFACES WHICH COMPRISES CONTACTING SAID POLYMERS WITH AN ALCOHOL AMINE SELECTED FROM THE GROUP CONSISTING OF MONOETHANOLAMINE, DIETHANOLAMINE AND TRIETHANOLAMINE AT A TEMPERATURE IN THE RANGE OF 200* TO 340* F. FOR A PERIOD OF TIME OF AT LEAST 4 HOURS.
Claim 2
Independent Claim
50 words
A METHOD FOR REMOVING POLYMERS OF FURTURAL FROM METALLIC SURFACES WHICH COMPRISES CONTACTING SAID POLYMERS WITH AN ALCOHOL AMINE SELECTED FROM THE GROUP CONSISTING OF MONOETHANOLAMINE, DIETHANOLAMINE AND TRIETHANOLAMINE AT A TEMPERATURE IN THE RANGE OF 200* TO 340* F. FOR A PERIOD OF TIME OF AT LEAST 4 HOURS.
References Cited (Backward Citations)
US2460600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |